Primary-battery plate.



A. 0. TATE.

PRIMARY BATTERY PLATE.

APPLICATION rum) PBB.25,1908.

Patented Nov. 29, 1910.

THE Noam: PETERS ca, WASHINGTON. 11 c.

.UNlITED STATES PATENT @FFTQE.

ALFRED 0. TATE, OF TORONTO, ONTARIO, CANADA.

PRIMARY-BATTERY PLATE.

To (ZZZ whom it may concern."

Be it known that I, ALFRED O. TATE, a subject of the King of GreatBritain, and resident of the city of Toronto, Province of Ontario,Dominion of Canada, have made a new and useful Invention in Primary-Battery Plates, of which the following is a specification.

My invention has for its object, to increase the eiiiciency of suchbatteries oy materially decreasing the internal resistance thereof, andto this end I construct a battery plate in such manner as to be of abifunctional nature, and I effect this result by combining the positiveand negative elements of the battery in very close mechanical andelectrical relation with each other, the parts when assembled being ofthe most compact form.

My invention will be fully understood by referring to the accompanyingdrawings, in which,

Figure 1 is a side elevational view of improved bifunctional primarybattery plate, full size. Fig. 2 is a transverse sectional view thereoftaken on the line X-X and as seen looking thereat from the top towardthe bottom of the drawing.

As illustrative of the preferred form of my invention I assemblesectional positive and negative elements in such manner as to constitutea single plate or element of a bifunctional character and separate thepositive and negative sections by relatively thin strips of insulatingmaterial g, 9, preferably of a porous nature. These sections and stripsare interleaved in the manner shown in the drawings and bound togetherbetween insulating side bars (Z, d, by insulating bolts 2'), b, 7), Z),and nuts 01., n, a, a, after which the positive sections 0, 0, are allelectrically connected together in multiple by a conductor w and thenegative sections .2, z, similarly connected together by a conductor w.

Specification of Letters Patent.

Application filed February 25, 1908.

Patented Nov. 29, 1914). Serial No. 417,688.

I prefer to make the positive sections 0, c, of compressed oXid ofcopper and the negative elements a, a, of metallic Zinc, and I alsoprefer that the separating media, in the nature of insulating material9, 9, shall be of thin strips of kaolin.

I do not limit my invention, however, to the use of such materials, as Icontemplate generically the use of any of the well known materials inthe art, whereby potential electrical energy is obtained in primarybatteries, when such elements are combined in the manner described so asto constitute a bifunctional plate.

Having thus described my invention what I claim and desire to secure byLetters Patent of the United States is l. A bifunctional primary batteryplate embracing interleaved positive and negative sections separatedfrom each other by porous insulating material, the positive sectionsbeing all connected together at one end and the negative sectionssimilarly connected together at the other end, and all of said partsheld together by insulating bolts extending therethrough, substantiallyas described.

2. A bifunctional primary battery plate embracing interleaved positiveand negative sections separated from each other by porous insulatingmaterial; in combination with insulating side bars and insulating boltsextending through the side bars and the sections, the positive sectionsof the plate being all connected together at one end and the negativesections similarly connected to gether at the other end, substantiallyas described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALFRED O. TATE.

lVitnesses:

C. J. KINTNER, M. F. KEATING.

